olivegroup-gamified1/css/contextmenu.css

sample des

.rc-tree-contextmenu {
    position: absolute;
    left: -9999px;
    top: -9999px;
    z-index: 1070;
    display: block;
    background-color: #fff;
  }
  .rc-tree-contextmenu-hidden {
    display: none;
  }
  .rc-tree-contextmenu-inner {
    border: 1px solid #ddd;
    padding: 10px 20px;
  }